java program:Game of NIM
Budget $10-30 USD
Description
Draw a flowchart for the algorithm and write a program that plays the ancient Chinese game of
NIM. Actually, this is a simplified version of the game. Each game starts with a user-specified
number of stones in a pile. The user and the computer take turns removing either one or two
stones from the pile. The player who takes the last stone loses. Your program should have the
computer use the optimal playing strategy. The optimal strategy is as follows:
Divide the remaining number of stones by three. If the remainder is zero, then two stones
are removed, or else one stone is removed. For example, if the remaining number of
stones is nine or fifteen, then two stones are removed; if the remaining number of stones
is eight or ten, then one stone is removed.
Your algorithm and program should allow the user to play additional games of NIM as long as
he/she enters a “y” or “yes” (lowercase or uppercase) in response to a “Do you want to
play again?” prompt. Keep the tally of wins and announce the winner at the end of the
program. The tally will include for the player and the computer the number of wins by each and
the total number of games played. The “player” with more wins is the winner. In the case where
both the player and the computer have the same number of wins, then it is a draw. See the
sample output.
In addition, your will need to add input validation to your NIM algorithm and program. More
specifically, 2
1) ask the user to re-enter the number of starting stones if he/she doesn’t enter an
appropriate number,
2) ask the user to re-enter the number of stones to be removed if he/she doesn’t enter an
appropriate number, and
3) ask the user to re-enter a “yes/no” response if he/she doesn’t enter an appropriate
string.
Your game (algorithm and program) is to be well designed – future users and maintainers of this
solution would like to have a programmer-friendly, carefully planned design.
Sample Output
A sample run of the program is shown below. (Note: Bold texts are user input.) :
T H E G A M E O F N I M
Enter number of starting stones: 7
Would you like to go first? (y/n): yEs
How many would you like to remove (1 or 2)? 1
The number of stones left is 6.
The computer removes 2 stones.
The number of stones left is 4.
How many would you like to remove (1 or 2)? 2
The number of stones left is 2.
The computer removes 1 stone.
The number of stones left is 1.
How many would you like to remove (1 or 2)? 1
The number of stones left is 0.
The computer wins!
Do you want to play again? (y/n): Y
Enter the number of starting stones: 4
Would you like to go first? (y/n): n
The computer removes 1 stone.
The number of stones left is 3.
How many would you like to remove (1 or 2)? 2
The number of stones left is 1.
The computer removes 1 stone.
The number of stones left is 0.
You win!
Do you want to play again? (y/n): n
Results:
Computer Wins – 1
Player Wins - 1
Total Games - 2
It is a DRAW!
Thank you, good bye!
20 freelancers are bidding on average $37 for this job
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